Mediven Thrombexin Anti-Embolism Knee High 18 mmHgMediven Thrombexin 18 mmHg Anti Embolism Knee Highs provide therapeutic consistent compression of 18mmHg. FEATURES: Developed to help prevent blood clots (thrombi) that can form in the legs and possibly prevent blood (venous) return. The most feared complication of thrombosis is a pulmonary embolism. Appropriate for all forms of travel, especially air. SPECIFICATIONS: Brand: Mediven Series: Thrombexin Style: Knee High Compression: 18 mmHg